Recent research has indicated that submarine groundwater discharge (SGWD) is a significant component of the hydrologic cycle in coastal plain regions, and that discharged groundwater can be contaminated with nutrients and pesticides. Although discharge has been measured directly on a local level, a convenient method for determining the spatial distribution of SGWD on a regional scale using read...

[1] Yearly rainfall totals in wet-to-dry climate transition zones show marked multiyear periods of dry and wet anomalies. These are said to originate from large-scale external forcings (e.g. SST anomalies) and enhanced by land-atmosphere coupling through soil moisture, vegetation and surface albedo. We explore the hypothesis that the degree of persistence in rainfall may be partly caused by gro...

Interstitial water, faunal samples, and hydrogeological data were collected beneath a riffle on the Speed River, southern Ontario, Canada. The purpose was to identify the location and seasonal fluctuation of the hyporheic/groundwater interface and to examine several aspects of water mass chemical signatures and the dynamics of the interstitial fauna. Concentration discontinuities in several wat...

A natural consequence of groundwater withdrawals is the removal of water from subsurface storage, but the overall rates and magnitude of groundwater depletion and capture relative to groundwater withdrawals (extraction or pumpage) have not previously been well characterized. This study assesses the partitioning of long-term cumulative withdrawal volumes into fractions derived from storage deple...

The Hong Kong International Airport was built on a man-made island. The groundwater head of the deep basal sand and gravel aquifer remains high several years after the land reclamation. The heads in different aquifers indicate an upward groundwater flow. The aim of this study is to understand the abnormally high pore water pressure in the basal aquifer. The most plausible explanation for the ab...

Perfluoroalkyl acids (PFAAs) can be released to water bodies during manufacturing and application of PFAA-containing products. In this study, the contamination pattern, attenuation dynamics, sources, pathways, and risk zoning of PFAAs in surface and ground water was examined within a 10km radius from a mega-fluorochemical industrial park (FIP). Among 12 detected PFAAs, perfluorooctanoic acid (P...

It is well known that anisotropy plays an important role in discharge of groundwater to lakes; groundwater flows almost horizontally to a lake then over a short distance changes direction to an almost vertical direction in the vicinity of or right below the lake. At this scale anisotropy becomes important. However, usually most simulation studies assume that the principal directions of the hydr...

P. D. Sreekanth*, N. Geethanjali, P. D. Sreedevi, Shakeel Ahmed, N. Ravi Kumar and P. D. Kamala Jayanthi National Research Centre for Cashew, Puttur 574 202, India Sri Krishnadevaraya University, Anantapur 515 003, India National Geophysical Research Institute, Hyderabad 500 007, India Central Plantation Crops Research Institute, Kasaragod 671 124, India Indian Institute of Horticulture Researc...

Artificial recharge of groundwater is achieved by putting surface water in basins. furrows, ditches, or other facilities where it infiltrates into the soil and moves downward to recharge aquifers. Artificial recharge is increasingly used for shortor long-term underground storage. where it has several advantages over surface storage, and in water reuse. Artificial recharge requires permeable sur...

Wastewater can be regarded as a valuable resource that can be re­ used in various ways, creating more sustainable societies which can benefit both human communities and the environment. An issue when using reclaimed water is the potential presence of health hazards such as microbial pathogens. The presence of pathogens can often impact on the type of water reclamation project selected. Artifici...